“…In 1990, Eysenck summarized it by saying that “assortative mating, important in the formation of social attitudes, has little impact on personality” (p. 245), and much of the literature continues to find only modest evidence of spousal similarity in personality (Lake, Eaves, Maes, Heath, & Martin, 2000; Luo & Klohnen, 2005; Watson, Klohnen, Casillas, Simms, Haig, & Berry, 2004). To put these findings in perspective, Plomin (1999) claimed that “there is greater assortative mating for g [general intelligence] than for any other behavioral trait; that is, spouse correlations are only ~.1 for personality and only ~.2 for height or weight, but the correlation for assortative mating for g is ~.4” (p. 1476).…”